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OptiPlay
OptiPlay
11 – 50 Employees
APIB2BGaming
OptiPlay develops B2B iGaming content for licensed operators and platform partners. Its portfolio centers on HTML5 casino slot games and white-label integrations, supported by a REST API and sandbox designed to streamline deployment. The company’s titles use certified random number generation and independently tested game mathematics, with configurable RTP and volatility settings for different operator requirements. Built for desktop, mobile, and tablet through PixiJS and HTML5, OptiPlay’s games include responsible-gaming features, multi-language and multi-currency support, and compatibility with regulated-market operations. The company reports more than 10 released games and partnerships with over 50 operators across more than 20 regulated markets, alongside round-the-clock partner support.
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Middle Frontend Developer (Pixi.js) – Remote in Ukraine

Build and deliver Pixi.js HTML5 slot games for an iGaming studio. Contribute to shared frontend architecture, development pipelines, and performance across multiple game projects.

CYCyprusDEGermanyPLPolandSKSlovakiaUAUkraineRemoteFull-timeMiddleSeniorEnglish RequiredFrontend EngineerSoftware Engineer
JavaScriptTypeScriptVue.js

Description

  • Develop and release slot games across the full lifecycle, from prototype through production.
  • Define frontend architecture and development standards across multiple projects.
  • Make technical decisions, conduct code reviews, and share expertise with colleagues.
  • Work with Producers, Artists, and Backend Engineers to integrate features smoothly and optimize performance.
  • Keep codebases scalable, maintainable, and reusable through reviews and shared engineering practices.
  • Create new features, interface components, and in-game visual effects.
  • Enhance the core framework, build tooling, and asset pipelines.
  • Analyze performance and troubleshoot applications across desktop, mobile, and WebGL environments.
  • Document implementation details and contribute to team knowledge sharing.
  • Track developments in frontend technology and iGaming practices.

Requirements

  • At least three years of professional frontend development experience.
  • One or more years of experience building HTML5 slot games.
  • A track record of delivering multiple titles through complete production cycles.
  • Advanced Pixi.js skills and strong command of modern JavaScript and TypeScript.
  • Strong knowledge of object-oriented programming, asynchronous programming, and rendering performance optimization.
  • Solid experience with Spine animations and asset management pipelines.
  • Experience with or proficiency in Codex and WordCode is required.
  • Fluent English communication skills.
  • Game audio experience with Howler.js, the Web Audio API, or a comparable technology is a plus.
  • Experience with build automation, CI/CD pipelines, or process optimization tools is a plus.
  • Knowledge of iGaming concepts such as RNG logic, platform workflows, and integrations is a plus.
  • Experience creating custom visual effects with GLSL or WebGL shaders is a plus.
  • Experience with Vue 3 or another modern UI framework is a plus.

Benefits

  • 21 vacation days plus five additional days off each year.
  • 12 paid sick days.
  • Fully remote work from a location where you are productive.
  • Flexible start time between 08:00 and 12:00 CET.
  • Fixed allowance for health insurance and gym or fitness expenses.
  • All necessary work equipment is provided.
  • Direct communication with founders and C-level leadership, with minimal bureaucracy.
  • Few meetings and an asynchronous-friendly working style.
  • A fast-moving startup environment with creative, close-knit collaboration.
  • Business trips and team meetups several times each year.
  • Multiple options for receiving salary payments.
  • Additional perks become available after the company reaches break-even.

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